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23-06-2025 13:25

Enrique Rubio Enrique Rubio

I would like to hear your opinion on this Scutelli

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

25-06-2025 16:25

Thomas Flammer

My first impression was sth like Rutstromeia, but

24-06-2025 22:29

Danny Newman Danny Newman

Hello AscoFrance, I have recently photographed, c

24-06-2025 14:00

Warre Van Caenegem

I'm currently in Croatia doing fieldwork that is n

23-06-2025 04:03

Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

22-06-2025 13:52

DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

26-05-2025 18:09

Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

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Lophiostomataceae
Gernot Friebes, 05-03-2010 18:17
Hi,

could you please help me with this Pleosporales which I were not able to determine. It grew on a branch of Salix, the ascomata are opening slit-like and slightly immersed. The spores have a thick gel sheath as long as they are hyaline, when they are mature the sheath is gone and the spores are slightly brownish. They have 4-9 septa and are (32)38-51 x (9)9,5-10, the asci are bitunicate and 8-spored.

Best wishes,

Gernot

  • message #10625
Gernot Friebes, 05-03-2010 18:18
Re:Lophiostomataceae
micros (scale=10 µm)
  • message #10626
Gernot Friebes, 05-03-2010 18:21
Re:Lophiostomataceae
note the sheath
  • message #10627
Christian Lechat, 05-03-2010 19:07
Christian Lechat
Re:Lophiostomataceae
Hi Gernot,
your fungus ressembles to Lophiostoma massarioides (Sacc.) Holm., although Holm does not speak about ascospore with a sheath.
All the best,
Christian
Alain GARDIENNET, 05-03-2010 19:11
Alain GARDIENNET
Re:Lophiostomataceae
I thought at L. subcorticale (one septate generally ! , it isn't that) but the good proposition is given by Christian.
A very nice recolt.
Alain
Alain GARDIENNET, 05-03-2010 19:26
Alain GARDIENNET
Re:Lophiostomataceae
It would be a good idea to see all the descriptions around massarioides, appendiculatum, appendiculatum var littorale and why not alpigenum. Which one has sheath ? which one never has a sheath ? ... Material lacks and your recolt is an important recolt you does keep very carefully.
Alain
Gernot Friebes, 05-03-2010 20:13
Re:Lophiostomataceae
Hi Christian and Alain,

thank you very much for you help. Unfortunately I don't have any literature on L. massarioides, could you maybe scan me the description by Holm?

Best wishes,

Gernot
Christian Lechat, 05-03-2010 21:40
Christian Lechat
Re:Lophiostomataceae
Hi Gernot,
here is Holm's description
Have a nice evening
Christian
Gernot Friebes, 05-03-2010 22:13
Re:Lophiostomataceae
Hi Christian,

you are great, thank you very much! The description fits quite well and at least they mention that Saccardo reported a sheath, even though Holm & Holm didn't see one. In my collection I could observe a sheath in some ascomata while others didn't have one or very few. I think that a collection with mainly older, mature spores could lack a sheath and maybe it disappears in dead material.
Anyway a very nice find and I'm happy with the outcome!

Best wishes,

Gernot